I would say Japanese is still uncultivated until now since Japanese is violating international law, e.g. Cairo Declaration (1943) (US, UK, China), and Potsdam Declaration (1945) (US, UK, China, Russian) and does not want to follow these Declaration signed by Allies in WWII to talk with China and other allies, and just want to rob Diaoyu island again (please note that Japanese robbed Diaoyu island f